Search Publications
The initial conditions of isolated star formation - VI. SCUBA mappingof pre-stellar cores
Ward-Thompson, D.; André, P.; Kirk, J. M.
Observations have been carried out with the Submillimetre Common-User Bolometer Array (SCUBA) at the James Clerk Maxwell Telescope (JCMT) of regions of comparatively isolated star formation in molecular cloud cores. Some 52 starless cores were observed, which are molecular cloud cores that do not contain any sign of protostellar activity such as i…
A photoionization-modelling study of 30 Doradus: the case for small-scale chemical inhomogeneity
Tsamis, Yiannis G.; Péquignot, Daniel
Photoionization models of the giant HII region (GHIIR) 30 Doradus are built and confronted to available ultraviolet (UV), optical, infrared (IR) [Infrared Space Observatory (ISO)] and radio spectra, under blackbody or CoStar spectral energy distributions for the primary source and various density distributions for the nebular gas. Chemically homog…
Dust in spiral galaxies: global properties
Stevens, J. A.; Gear, W. K.; Amure, M.
We present and analyse high-quality Submillimetre Common-User Bolometer Array (SCUBA) 850- and 450-µm images of 14 local spiral galaxies, including the detection of dust well out into the extended disc in many cases. We use these data in conjunction with published far-infrared flux densities from IRAS and ISO, and millimetre-wave measurement…
The evolution of actively star-forming galaxies in the mid-infrared
Panuzzo, P.; Bressan, A.; Chavez, M. +3 more
In this paper we analyze the evolution of actively star-forming galaxies in the mid-infrared (MIR). This spectral region, characterized by continuum emission by hot dust and by the presence of strong emission features generally ascribed to polycyclic aromatic hydrocarbon (PAH) molecules, is the most strongly affected by the heating processes assoc…
Polycyclic aromatic hydrocarbon emission bands in selected planetary nebulae: a study of the behaviour with gas phase C/O ratio
Barlow, M. J.; Cohen, Martin
Airborne and space-based low-resolution spectroscopy in the 1980s discovered tantalizing quantitative relationships between the gas phase C/O abundance ratio in planetary nebulae (PNe) and the fractions of total far-infrared (FIR) luminosity radiated by the 7.7- and 11.3-µm bands (the C = C stretch and C-H bend, respectively), of polycyclic …
Final analysis of ELAIS 15-µm observations: method, reduction and catalogue
Aussel, H.; Pozzi, F.; Franceschini, A. +15 more
We present the final analysis of the European Large Area Infrared Space Observatory (ISO) Survey (ELAIS) 15-µm observations, carried out with the ISO Camera (ISOCAM) instrument on board the ISO.
The data-reduction method, known as the Lari Method, is based on a mathematical model of the behaviour of the detector and was specifically des…Properties of FIRBACK-ELAIS 175-µm sources in the ELAIS N2 region
Dole, H.; Lagache, G.; Puget, J. -L. +15 more
We report on a search for the optical counterparts of 175-µm selected sources from the Far-Infrared Background (FIRBACK) survey in the European Large Area ISO Survey (ELAIS) N2 field. Applying a likelihood ratio technique to optical catalogues from the Isaac Newton Telescope - Wide Field Survey (INT-WFS), we found optical identifications for…
The European Large Area ISO Survey: optical identifications of 15-µm and 1.4-GHz sources in N1 and N2
Vaccari, M.; Serjeant, S.; Rowan-Robinson, M. +9 more
We present the multiwavelength properties and catalogue of the 15µm and 1.4GHz radio sources detected in the European Large Area ISO Survey (ELAIS) areas N1 and N2. Using the optical data from the Wide Field Survey we use a likelihood ratio method to search for the counterparts of the 1056 and 691 sources detected at 15µm and 1.4GHz, r…
Overtones of silicate and aluminate minerals and the 5-8 µm ice bands of deeply embedded objects
Hofmeister, A. M.; Bowey, J. E.
The distinct patterns, relatively low intensities and peak positions of overtone-combination bands of silicates and oxides suggest that the 5-8 µm spectral region can provide clues for the dust composition when near optically thick conditions exist for the 10-µm silicate feature. We present 1000-2500 cm-1 room-temperature la…
New insights into the dust properties of the Taurus molecular cloud TMC-2 and its surroundings
del Burgo, C.; Laureijs, R. J.
We present ISOPHOT observations at 120 and 200 µm of a 31 × 57 arcmin2 region, with optical extinction AV ranging between ~ 0.5 and 11 mag, that encloses the Taurus molecular cloud TMC-2. The far-infrared emission is separated into a warm and a cold component using the ISOPHOT data and IRAS measurements at 60 and 100 &m…